//
//  HGSBundle.m
//
//  Copyright (c) 2008 Google Inc. All rights reserved.
//
//  Redistribution and use in source and binary forms, with or without
//  modification, are permitted provided that the following conditions are
//  met:
//
//    * Redistributions of source code must retain the above copyright
//  notice, this list of conditions and the following disclaimer.
//    * Redistributions in binary form must reproduce the above
//  copyright notice, this list of conditions and the following disclaimer
//  in the documentation and/or other materials provided with the
//  distribution.
//    * Neither the name of Google Inc. nor the names of its
//  contributors may be used to endorse or promote products derived from
//  this software without specific prior written permission.
//
//  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
//  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
//  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
//  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
//  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
//  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
//  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
//  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
//  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
//  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
//  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//

// The following two paths are intentionally like <Vermilion/...> to support
// third party plugin development using our QSBPlugin template.
#import <Vermilion/HGSBundle.h>
#import <Vermilion/HGSLog.h>
#import <dlfcn.h>

static NSBundle *sPluginBundle = nil;

void HGSInitPluginBundle(void) {
  if (!sPluginBundle) {
    Dl_info info;
    if (dladdr(HGSInitPluginBundle, &info) != 0) {
      NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
      NSFileManager *filemgr = [NSFileManager defaultManager];
      NSString *filePath 
        = [filemgr stringWithFileSystemRepresentation:info.dli_fname
                                               length:strlen(info.dli_fname)];
      NSString *bundlePath = [[[filePath stringByDeletingLastPathComponent]
                               stringByDeletingLastPathComponent]
                              stringByDeletingLastPathComponent];
      sPluginBundle = [[NSBundle bundleWithPath:bundlePath] retain];
      HGSAssert(sPluginBundle, @"You have a NULL bundle at "
                @"HGSInitPluginBundle. Tried to create bundle at %@ from full "
                @"path %@", bundlePath, filePath);
      [pool release];
    }
  }
}
    
NSBundle* HGSGetPluginBundle(void) {
  HGSAssert(sPluginBundle, @"You have a NULL bundle at HGSGetPluginBundle");
  return sPluginBundle;
}
